My second observation of this sawfly, and still can't find an ID. Also wondering what the hind tibia are adapted for..?
Hold cursor on larvae image.
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Looking again, they're not the tibia, but an adaptation of the tarsi..?
An iSpot Project- HELP WITH IDS - UK & Ireland Community - PLANTS
Thank you for your help, and the invaluable data.
Interestingly I do have a silver birch in my front garden. Would that make it good for Croesus septentrionalis, or would that be wishful thinking?
How about this, Croesus septentrionalis, the thought did cross my mind re the larva on my hazel tree. Was I surprised when I Googled it and came up with my image showing the larvae of, yep as you have already seen, Croesus septentrionalis. Done and dusted would you say, or am being a bit over zealous?
That same image can be found here on iSpot.
Lat/Lng: 53.2062, -0.5644
OS grid ref: SK959686
First observation was what appeared to be huntting in Ivy. This time it was resting on a hazel leaf. Both times in my garden.